[b][align=center]Ultraprecision Manufacturing and Its Technology of Feed Drive WU Shang-sheng (College of Meeh & Auto. Eng. Itunan University, Changsha 410082, China)[/align][/b] Abstract: This paper discusses the significance, main methods, key technologies, and role and status of ultraprecision machining in mechanical manufacturing technology. It introduces the working principle and basic structure of a novel ultraprecision feeding mechanism directly driven by a linear motor, which effectively solves the problem of precise movement and positioning in ultraprecision machining. Keywords : Ultraprecision machining, linear motor, feed mechanism, mechanical manufacturing Key words: Ultraprecision machining; Linear motor; Feeding mechanism; Table Mechanical manufacturing technology is the technology for manufacturing mechanical equipment. Its advanced nature is mainly reflected in two fields: precision machining technology and ultra-precision machining technology, and manufacturing automation. The former includes precision machining, ultra-precision machining, micro-machining, and nano-machining, which pursues the limits of machining accuracy and surface quality, and can be called precision engineering. The latter includes the automation of design, manufacturing, and management. It is not only an important means to quickly respond to market demands, improve productivity, and improve working conditions, but also an effective measure to ensure product quality and improve stable machining quality. The two are closely related. Many precision and ultra-precision machining processes rely on automation technology to achieve their expected goals, while many manufacturing automation processes depend on precision machining for accurate implementation. 1 The Status and Role of Ultra-Precision Machining [b][align=center]For details, please click: Ultra-Precision Machining and its Feed Drive Technology[/align][/b]